Register a card as a payment method for a user.
The card PAN is stored securely with encryption at rest.
Only masked values (last4, brand) are returned in subsequent API
responses — the full PAN is never re-exposed.
user_id — the owner of the payment methodpan — full card number (encrypted at rest)cardholder_name — name on the cardexp_month — expiry month (1–12)exp_year — expiry year (e.g. 2027)Documentation Index
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The access token received from the authorization server in the OAuth 2.0 flow.
Add a card as a payment method.
Owner user UUID.
"b3a9b622-cc63-4d3c-aad6-2d8e29e6f9d4"
Card PAN (primary account number). Encrypted at rest.
12 - 19"4111111111111111"
Name on the card.
120"John Doe"
Card expiry month (1–12).
1 <= x <= 1212
Card expiry year (e.g. 2027).
2000 <= x <= 21002027
Billing address (line1, city, state, postal_code, country).
{
"city": "New York",
"country": "US",
"line1": "123 Main St",
"postal_code": "10001",
"state": "NY"
}Optional display nickname.
120"My Visa Card"